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ASTM E-119 is a test standard for walls, partitions and floor or roof systems:
This test standard is also used for ceramic type glasses when used as window wall and/or borrowed light frames.
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Maximum hourly rating for a transom and side light or panel frame is 1 1/2 hour (90 minutes).
In masonry wall application the maximum is 13'6" x 12'2"
In stud wall application the maximum is 13...

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STC stands for Sound Transmission Class.
An STC (Sound Transmission Class) is a single number rating system derived from measured values of sound transmission loss in accordance with ASTM E90 and...

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The following size limitations per frame unit, are in enforced for welded elevation frames shipped from the factory. These limitations are in place due to the physical size of shipping tr...